Established in 1998, China Guanda Hose Technology Co., Ltd. is a professional light pipe manufacturer and wholesaler of hoses and tubes. Our annually capacity of various kinds of hoses is more than 5,000,000 meters. Our customized light pipes products are applied in industrial equipment, hotels, villas, toilets, and kitchens. They are widely used in the field of aerospace, metallurgy, petrol-chemical, machinery, architecture, shipping, vacuum, power and light industries.

The light-tube proposal builds on the earlier heliostatic light-tube project by Carpenter/Norris Consulting that was completed in 2001 in Washington DC, USA, in which a 36m long light tube with a tapering internal cone of prismatic glass and an external diffuser of stretch fabric effectively introduced daylight deep within a new office space, (a heliostat is a computer controlled powered mirror that tracks the path of the sun to produce a constant beam of daylight at a specific angle).The suggestion in London was to install a heliostat on the roof of the building to reflect daylight down within the atrium, distributing it to the intermediate floors, and ultimately to a focal element on the Apple floor. This tube was to use interlocking bent diffused glass panels to construct a structural glass tube approximately 1.8m in diameter and 15m high.

The new PBLP Series offers an integral prism design within the light pipe, directing the surface mounted LED light down the center of the light pipe. It includes a slide-on base for easy mounting onto industry standard push-button shafts of through-hole or surface-mounted PCB-mounted switches. By positioning the switch immediately behind a surface-mounted (SMT) LED chip, the light pipe immediately enables the otherwise non-illuminated switch to become a lighted push-button switch unit in effect. This concept significantly reduces the cost multipliers experienced in specifying a lighted push-button switch (LPBS), eliminating the need of the lighted switch itself and additional cost of filters, or other special legends while offering a new, smaller cross-section display/button configuration to designers.
Anthony Vilgiate, Bivar Vice President of Strategic Business Development stated, "The PBLP offers an immediate, low cost alternative to use of illuminated push-button switch would accentuate a products over all appeal and adds functionality by clearly identifying status." He also cited, "The ability to provide such a small button surface, capable of transmitting the brightness and full color of a board-mounted LED to applications requiring a switch control from the front panel, opens new doors to creative panel and indicator status display design."